Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
22008excellentexcellent41excellent
210013excellentexcellent31excellent
200010excellentexcellent31excellent
19008excellentexcellent21excellent
18007excellentexcellent11excellent
17007excellentexcellent11excellent
160012excellentexcellent11excellent
15005excellentexcellent11excellent
14003excellentexcellent11excellent
13006excellentexcellent11excellent
12003excellentexcellent11excellent
11004excellentexcellent11excellent
10005excellentexcellent21excellent
09008excellentexcellent21excellent
080012excellentexcellent21excellent
070014excellentexcellent31excellent
060013excellentexcellent31excellent
050012excellentexcellent21excellent
04008excellentexcellent31excellent
03007excellentexcellent21excellent
02006excellentexcellent21excellent
01004excellentexcellent21excellent
00006excellentexcellent21excellent
23008excellentexcellent31excellent